[alsa-devel] [PATCH - Fix Fast Track Ultra series: 44.1/88.1 kHz 1/Fix playback/capture issues and related chrashes at 44100 Hz and 88200 Hz for M-Audio Fast Track Ultra series.
clemens at ladisch.de
Wed Jul 7 14:44:45 CEST 2010
Felix Homann wrote:
> This fixes issues with M-Audio's Fast Track Ultra series:
> * devices now work at 44100 and 88200 Hz
The descriptors already list these rates, so in theory, the existing
code that sets UAC_EP_CS_ATTR_SAMPLE_RATE should already have enabled
this. Didn't it? In other words, what is the difference in the
explicitly specified audioformat?
(I have the suspicion that we don't actually need a AUDIO_FIXED_ENDPOINT
quirk for these devices.)
> * apparently, fixes some crashes, too
When do these crashes happen?
> This is based on a patch posted by user 'dhubsith' on the M-Audio user
If you don't have the exclusive copyright for the code in this patch,
there needs to be a Signed-off-by line from him, too. OTOH, a table
like this probably isn't copyrightable at all.
> - USB_DEVICE(0x0763, 0x2080),
> + USB_DEVICE(0x0763, 0x2081),
This replaces the ID of the Ultra 8 ID with that of the Ultra 8R ...
> USB_DEVICE(0x0763, 0x2081),
> - .driver_info = ...
> + .driver_info = ...
... and this just changes the other 8R entry. So now the 8 doesn't
have an entry.
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